TM 10-4320-345-13
Table 2-1. Operator Preventive Maintenance Checks and Services for Model TWDS20 - cont.
ITEM
INTERVAL
LOCATION
PROCEDURE
NOT FULLY MISSION
NO.
ITEM TO CHECK/
CAPABLE IF:
SERVICE
STORAGE
ASSEMBLY
14
Before
Tee
Inspect tee bodies for cracks and
Tee cracked or damaged.
corrosion.
15
Before
Gate Valve
a. Inspect for loose, broken, or
Hand wheel broken or
(4-inch)
missing hand wheel Rotate hand
missing. Valve will not
wheel. Valve should turn freely
turn. Valve body cracked
b. Inspect valve body for cracks and
or damaged. Coupling
external damage.
cracked or broken.
c. Inspect for cracked, bent or broken
Attaching hardware
quick disconnect couplings.
Missing.
d. Check for loose or missing
attaching hardware.
16
Before
Discharge Hoses
a. Inspect hoses for cuts, tears and
Hoses cut or torn.
deep abrasions.
Couplings cracked or
b. Inspect for cracked and bent or
broken.
broken couplings.
c. Check for and straighten kinked
hoses.
17
Before
Water Meter
a. Inspect for cracked or broken
Meter body cracked or
cover or indicator.
Damaged. Meter indicator
b. Inspect meter body of cracks and
broken.
external damage.
2-15
